Wait. What ? The free version of Malwarebytes WILL get new definition updates. The free version does not run real time protection. Also, pay attention when you install Malwarebytes Free version and opt out of the free pro trial when you do install ! In the free version you have to manually get updates from within the program. In the pro version, updates are automatic. I would not be caught without Malwarebytes on any of my systems and I am running the Pro (grandfathered in for life from version 2.0) version on every computer I own.